Tighter superadditivity relations for l1-norm coherence measure
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Published:2024-06-25
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ISSN:0219-7499
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Container-title:International Journal of Quantum Information
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language:en
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Short-container-title:Int. J. Quantum Inform.
Author:
Yang Kang-Kang1ORCID,
Shen Zhong-Xi1ORCID,
Wang Zhi-Xi1ORCID,
Fei Shao-Ming1ORCID
Affiliation:
1. School of Mathematical Sciences, Capital Normal University, Beijing 100048, P. R. China
Abstract
Quantum coherence serves as a crucial physical resource, with its quantification emerging as a focal point in contemporary research. Superadditivity constitutes one of the most fundamental attributes in characterizing the coherence distribution in multipartite quantum systems. In this paper, we provide a way to derive tighter superadditivity inequalities of [Formula: see text]-norm coherence measure for arbitrary multiqubit states. We present a category of superadditivity relations related to the [Formula: see text]th [Formula: see text] power of [Formula: see text]-norm coherence [Formula: see text] under certain conditions. Our results are better than the existing ones and are illustrated in detail with examples.
Funder
Innovative Research Group Project of the National Natural Science Foundation of China
Innovation Platform for Academicians of Hainan Province
Publisher
World Scientific Pub Co Pte Ltd